GitHub pull request self-unassignment bookmarklet

README.md

Create a new browser bookmark and set its URL to this:

javascript:function _asyncToGenerator(b){return function(){var c=b.apply(this,arguments);return new Promise(function(e,f){function g(h,i){try{var j=c[h](i),k=j.value}catch(l){return void f(l)}return j.done?void e(k):Promise.resolve(k).then(function(l){g('next',l)},function(l){g('throw',l)})}return g('next')})}}_asyncToGenerator(regeneratorRuntime.mark(function b(){var c,e,f,g,h,i,j,k,l,m,n;return regeneratorRuntime.wrap(function(p){for(;;)switch(p.prev=p.next){case 0:if(c=function(q){return Array.prototype.slice.call(q)},e=function(q){return new Promise(function(r){return setTimeout(r,q)})},f=document.documentElement.scrollTop,g=document.querySelectorAll('.sidebar-assignee')[1],h=c(g.querySelectorAll('p .assignee')),i=document.querySelector('meta[name=user-login]').content,h.some(function(q){return q.textContent===i})){p.next=9;break}return alert('You\'re not assigned!'),p.abrupt('return');case 9:j=g.querySelector('.discussion-sidebar-toggle'),j.click(),k=[];case 12:if(k.length){p.next=18;break}return k=c(g.querySelectorAll('.selected .js-username')),p.next=16,e(200);case 16:p.next=12;break;case 18:return l=k.find(function(q){return q.textContent===i}),m=l.closest('.select-menu-item'),m.click(),p.next=23,e(100);case 23:j.click(),n=document.querySelector('.sidebar-notifications button'),/Unsubscribe/.test(n.textContent)&&n.click(),document.documentElement.scrollTop=f;case 27:case'end':return p.stop();}},b,void 0)}))();

Clicking the bookmarklet while viewing a PR's "Conversation" tab will unassign and unsubscribe you.

Tested in Chrome only.

source.js

// To generate a bookmarklet out of this, run the code through   
// https://babeljs.io/repl and then prepend `javascript:`

(async () => {
  // Helper functions
  const asArray = arrayLike => Array.prototype.slice.call(arrayLike);
  const sleep = ms => new Promise(resolve => setTimeout(resolve, ms));

  // Remember current scroll position of page
  const scrollPosition = document.documentElement.scrollTop;

  // Check that self is assigned
  const sidebar = document.querySelectorAll('.sidebar-assignee')[1];
  const assigneeLinks = asArray(sidebar.querySelectorAll('p .assignee'));
  const myUsername = document.querySelector('meta[name=user-login]').content;
  if (!assigneeLinks.some(a => a.textContent === myUsername)) {
    alert('You\'re not assigned!');
    return;
  }

  // Open "Assignees" dropdown
  const assigneeButton = sidebar.querySelector('.discussion-sidebar-toggle');
  assigneeButton.click();

  // Wait until dropdown contents become available
  let userSpans = [];
  while (!userSpans.length) {
    userSpans = asArray(sidebar.querySelectorAll('.selected .js-username'));
    await sleep(200);
  }

  // Unassign self
  const mySpan = userSpans.find(d => d.textContent === myUsername);
  const myDiv = mySpan.closest('.select-menu-item');
  myDiv.click();
  await sleep(100);
  
  // Close "Assignees" dropdown
  assigneeButton.click();

  // Unsubscribe from notifications
  const followButton = document.querySelector('.sidebar-notifications button');
  /Unsubscribe/.test(followButton.textContent) && followButton.click();

  // Restore original scroll position
  document.documentElement.scrollTop = scrollPosition;
})();